SharedItemComponent (#3513)

* StorableComponent refactor

* ItemComponent refactor

* conflict fixes

* removes redundant null check

* removes redundant item throwing code

* fix conflicts

* ExplosionLaunchedComponent

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/GameObjects/Components/Disposal/SharedDisposalUnitComponent.cs

@@ -1,4 +1,4 @@
-#nullable enable
+#nullable enable
 using System;
 using System.Collections.Generic;
 using Content.Shared.GameObjects.Components.Body;
@@ -168,7 +168,7 @@ namespace Content.Shared.GameObjects.Components.Disposal
                 return false;
 
             // TODO: Probably just need a disposable tag.
-            if (!entity.TryGetComponent(out SharedStorableComponent? storable) &&
+            if (!entity.TryGetComponent(out SharedItemComponent? storable) &&
                 !entity.HasComponent<IBody>())
             {
                 return false;
@@ -182,7 +182,6 @@ namespace Content.Shared.GameObjects.Components.Disposal
                     return false;
                 }
             }
-
             return true;
         }